red fox vs Vulpes fulva

red fox and Vulpes fulva both are nouns.

Word	Noun	Adjective	Verb	Adverb
red fox	Yes	No	No	No
Vulpes fulva	Yes	No	No	No

As nouns, red fox and Vulpes fulva are synonyms defined as:

red fox and Vulpes fulva: New World fox; often considered the same species as the Old World fox

red fox (noun)	Vulpes fulva (noun)
the common Old World fox; having reddish-brown fur; commonly considered a single circumpolar species	New World fox; often considered the same species as the Old World fox
New World fox; often considered the same species as the Old World fox
weedy annual with spikes of silver-white flowers